Cold Chain Sensors
Client: FreshLine Cold StorageCold chain logistics · Tema
FreshLine Cold Storage, Tema Community 9 · Urgent, focused
FreshLine keeps fish and vaccines cold for half of Tema. Their sensors were bought over ten years from four vendors, and each one reports in its own format. One room is warming and nobody can tell which.
Who you'll work with
Ada MensahYour lead
Engineering Lead
Dry, warm underneath, short sentences. Notices how you did. Never gushes.
Mercy Tetteh
Floor Manager, FreshLine
Calm, fast, clipboard always in hand.
Kobby Aryee
Maintenance Technician, FreshLine
Knows every sensor by sound.
The client's system
Four vendors
Morse over a serial line, byte dumps in hex, binary or mixed bases, and one vendor's private base32 alphabet.
6 tickets in the sequence · every developer gets unique keys and tests · the rules come out in the tickets
Opens in
…- Pay / ticket
- 25–55
- Band
- 1,000–2,999
- Scored tickets
- 6
- Your time
- 96h
0 devs on this contract
Performance bonus · top 10
+130 gems to 1st
- #1+130
- #2+90
- #3+65
- #4+26
- #5+26
- #6–10+26 each
Ship 2+ tickets for a +10 completion bonus.
The shortlist stays hidden until wrap-up. Only the first 6 tickets count.